Oral nicotine pouches as a substitute for chewing tobacco; Oral nicotine pouches as a substitute for snus; Oral nicotine pouches for use as a tobacco substitute, not for medical purposes; Oral nicotine pouches for use as a tobacco substitute, not for therapeutic purposes; Oral tobacco-derived nicotine pouches as a substitute for chewing tobacco; Oral tobacco-derived nicotine pouches as a substitute for snus